CVE ID :CVE-2026-95859
Published : Oct. 16, 2026, 3:19 p.m. | 30 minutes ago
Description :libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.49.5, Gossipsub GRAFT control-message handling unconditionally adds attacker-supplied topic hashes to connected_peer.topics without confirming that the peer previously subscribed to those topics. A remote unauthenticated peer that can reach a Gossipsub listener can repeatedly send novel GRAFT topics, causing cumulative per-peer memory growth that is not bounded by subscription filters, peer scoring, or per-message size limits. This can exhaust process memory and cause a denial of service. This issue is fixed in version 0.49.5.
Severity: 0.0 | NA
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CVE-2026-95859 - libp2p-rust: Gossipsub GRAFT topics unbounded growth
CVE ID :CVE-2026-95859 Published : Oct. 16, 2026, 3:19 p.m. | 30 minutes ago Description :libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.49.5, Gossipsub GRAFT control-message handling unconditionally adds attacker-supplied topic hashes to connected_peer.topics without confirming that the peer previously subscribed to those topics. A remote unauthenticated peer that can reach a Gossipsub listener can repeatedly send novel GRAFT topics, causing